[CentOS] realm discover

Thu Jan 21 00:52:16 UTC 2016
Henry McLaughlin <henry at incred.com.au>

I am new to CentOS and trying to setup a Samba file server however when
discovering domains I receive an authorisation error:

[root at sssd-testing ~]# id
uid=0(root) gid=0(root) groups=0(root)
[root at sssd-testing ~]# realm discover
realm: Couldn't discover realms: Not authorized to perform this action